Use, Effects and Side-effects of Second-generation Antipsychotics in a Naturalistic Setting

Summary

Despite different pharmacological properties, the scientific evidence is inconclusive regarding which of the first-line second generation antipsychotics (SGAs) should be preferred for the individual patient suffering from psychosis. The limitations of the evidence base may be related to the highly selected samples, short duration, and rigid experimental designs of most randomized clinical trials of efficacy. Moreover a high proportion of the clinical trials are drug company sponsored which could introduce funding bias. The purpose of this non-commercially funded study is to investigate whether effectiveness differences exist among the first-line SGAs olanzapine, quetiapine, risperidone, and ziprasidone when the drugs are used in a representative clinical setting. Eligible patients are those admitted to hospital for acute psychosis and candidates for oral antipsychotic treatment. The investigators hypothesise that in the naturalistic setting of every-day clinical practice and in a diverse sample representative of most patients admitted for symptoms of acute psychosis, differential effectiveness among the SGAs could be disclosed when the patients are followed for up to 2 years. This could deliver valuable information regarding which SGA should be the starting antipsychotic drug in order to facilitate the most beneficial outcome.

Timeline

Start

2003-02

Primary completion

2010-01

Completion

2010-01

Publications

• Bjarke J, Sinkeviciute I, Kroken RA, Loberg EM, Jorgensen HA, Johnsen E, Gjestad R. Different response patterns in hallucinations and delusions to antipsychotic treatment. Nord J Psychiatry. 2020 Oct;74(7):497-504. doi: 10.1080/08039488.2020.1745273. Epub 2020 Apr 3.
• Kjelby E, Gjestad R, Sinkeviciute I, Kroken RA, Loberg EM, Jorgensen HA, Johnsen E. Trajectories of depressive symptoms in the acute phase of psychosis: Implications for treatment. J Psychiatr Res. 2018 Aug;103:219-228. doi: 10.1016/j.jpsychires.2018.06.003. Epub 2018 Jun 2.
• Johnsen E, Fathian F, Kroken RA, Steen VM, Jorgensen HA, Gjestad R, Loberg EM. The serum level of C-reactive protein (CRP) is associated with cognitive performance in acute phase psychosis. BMC Psychiatry. 2016 Mar 14;16:60. doi: 10.1186/s12888-016-0769-x.
• Kjelby E, Sinkeviciute I, Gjestad R, Kroken RA, Loberg EM, Jorgensen HA, Hugdahl K, Johnsen E. Suicidality in schizophrenia spectrum disorders: the relationship to hallucinations and persecutory delusions. Eur Psychiatry. 2015 Oct;30(7):830-6. doi: 10.1016/j.eurpsy.2015.07.003. Epub 2015 Sep 25.
• Johnsen E, Aanesen K, Sriskandarajah S, Kroken RA, Loberg EM, Jorgensen HA. QTc Prolongation in Patients Acutely Admitted to Hospital for Psychosis and Treated with Second Generation Antipsychotics. Schizophr Res Treatment. 2013;2013:375020. doi: 10.1155/2013/375020. Epub 2013 Dec 31.
• Johnsen E, Sinkeviciute I, Loberg EM, Kroken RA, Hugdahl K, Jorgensen HA. Hallucinations in acutely admitted patients with psychosis, and effectiveness of risperidone, olanzapine, quetiapine, and ziprasidone: a pragmatic, randomized study. BMC Psychiatry. 2013 Sep 30;13:241. doi: 10.1186/1471-244X-13-241.
• Kjelby E, Jorgensen HA, Kroken RA, Loberg EM, Johnsen E. Anti-depressive effectiveness of olanzapine, quetiapine, risperidone and ziprasidone: a pragmatic, randomized trial. BMC Psychiatry. 2011 Aug 31;11:145. doi: 10.1186/1471-244X-11-145.
• Johnsen E, Gjestad R, Kroken RA, Mellesdal L, Loberg EM, Jorgensen HA. Cardiovascular risk in patients admitted for psychosis compared with findings from a population-based study. Nord J Psychiatry. 2011 Jun;65(3):192-202. doi: 10.3109/08039488.2010.522729. Epub 2010 Sep 29.
• Johnsen E, Kroken RA, Wentzel-Larsen T, Jorgensen HA. Effectiveness of second-generation antipsychotics: a naturalistic, randomized comparison of olanzapine, quetiapine, risperidone, and ziprasidone. BMC Psychiatry. 2010 Mar 24;10:26. doi: 10.1186/1471-244X-10-26.

Drugs

Indications